Hibernate
Hibernate object-relational mapping framework is an open source, it had a very lightweight JDBC object package, it will POJO mapping relationship with a database table, it is a fully automated orm framework, hibernate can automatically generate SQL statements, automatically, so that the Java programmer can use arbitrary object programming thinking to manipulate the database. Hibernate can be used in any occasion using JDBC, Java can be used in both client program can also be used in Servlet / JSP Web application, the most revolutionary is, Hibernate can replace the CMP in EJB applications in architecture JaveEE complete data persistence task.